I have mislaid the power supply for a US Robotics Sportster 28,800 Fax Modem (with V34 and V32bis) which I would like to use. This modem lights up and *appears* to work with a supply of 9 volts DC, drawing around 200mA, but I'm not yet entirely convinced that it is performing correctly.
I did some Google searching and haven't managed to find a manual or any information about the particular unit that I have, but I did see a similar modem mentioned which requires 9 volt AC to power it. I haven't yet attempted feeding my modem with AC because I don't want to risk damaging it..
Can anyone in this NG tell me what the correct voltage should be, and if it should be AC or DC? Is there anywhere on the 'net where I might find a User Manual for this modem? I've searched for one, so far without any success.
Many thanks,
- Dave.